- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.
- Enter the following menus: Powertrain / Engine / Monitor.
- Check that Catalyst / Status2 is Incomplete.
- Start the engine and warm it up (until the engine coolant temperature is 75锟斤拷C (167锟斤拷F) or more) [A].
- Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes or more [B].
- The monitor items will change to Complete as catalyst monitor operates.
- Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
- Check if any DTCs (pending DTCs) are set.
HINT
If Catalyst does not change to Complete, and no pending DTCs are set, extend the driving time.
MONITOR RESULT
Refer to Checking Monitor Status See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Mode 6 Data.
CONDITIONING FOR SENSOR TESTING
HINT
Perform the operation with the engine speeds and time durations described below prior to checking the waveforms of the air fuel
ratio and heated oxygen sensors. This is in order to activate the sensors sufficiently to obtain the appropriate inspection results.
- Connect the Techstream to the DLC3 [A].
- Start the engine and warm it up with all the accessories switched off, until the engine coolant temperature stabilizes [B].
- Run the engine at an engine speed of between 2500 rpm and 3000 rpm for at least 3 minutes [C].
- While running the engine at 3000 rpm and 2000 rpm for 2 seconds, check the waveforms of the air fuel ratio and heated oxygen sensors using
the Techstream [D].
HINT
- If either of the voltage outputs of the air fuel ratio or heated oxygen sensor does not fluctuate, or either of the sensors makes a
noise, the sensor may be malfunctioning.
- If the voltage outputs of both the sensors remain lean or rich, the air fuel ratio may be extremely lean or rich. In such cases,
enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
- If the three-way catalytic converter has deteriorated, the heated oxygen sensor (located behind the three-way catalytic
converter) voltage output fluctuates up and down frequently, even under normal driving conditions (active air fuel ratio
control is not performed).
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